EP3134692A1 - Cooling device - Google Patents
Cooling deviceInfo
- Publication number
- EP3134692A1 EP3134692A1 EP15719425.9A EP15719425A EP3134692A1 EP 3134692 A1 EP3134692 A1 EP 3134692A1 EP 15719425 A EP15719425 A EP 15719425A EP 3134692 A1 EP3134692 A1 EP 3134692A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling device
- coolant reservoir
- cooling
- evaporator
- space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 122
- 239000002826 coolant Substances 0.000 claims abstract description 133
- 229940127554 medical product Drugs 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000007710 freezing Methods 0.000 description 17
- 230000008014 freezing Effects 0.000 description 17
- 238000003860 storage Methods 0.000 description 8
- 239000010836 blood and blood product Substances 0.000 description 7
- 229940125691 blood product Drugs 0.000 description 7
- 239000011810 insulating material Substances 0.000 description 7
- 229960005486 vaccine Drugs 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 235000015243 ice cream Nutrition 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000021270 cold food Nutrition 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/006—Self-contained movable devices, e.g. domestic refrigerators with cold storage accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/003—Transport containers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/02—Devices using other cold materials; Devices using cold-storage bodies using ice, e.g. ice-boxes
- F25D3/06—Movable containers
- F25D3/08—Movable containers portable, i.e. adapted to be carried personally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
- F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
- F25D2303/082—Devices using cold storage material, i.e. ice or other freezable liquid disposed in a cold storage element not forming part of a container for products to be cooled, e.g. ice pack or gel accumulator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
- F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
- F25D2303/083—Devices using cold storage material, i.e. ice or other freezable liquid using cold storage material disposed in closed wall forming part of a container for products to be cooled
- F25D2303/0831—Devices using cold storage material, i.e. ice or other freezable liquid using cold storage material disposed in closed wall forming part of a container for products to be cooled the liquid is disposed in the space between the walls of the container
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
- F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
- F25D2303/084—Position of the cold storage material in relationship to a product to be cooled
- F25D2303/0843—Position of the cold storage material in relationship to a product to be cooled on the side of the product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2331/00—Details or arrangements of other cooling or freezing apparatus not provided for in other groups of this subclass
- F25D2331/80—Type of cooled receptacles
- F25D2331/801—Bags
- F25D2331/8014—Bags for medical use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/005—Devices using other cold materials; Devices using cold-storage bodies combined with heat exchangers
Definitions
- the invention relates to a cooling device, in particular a freezer or cooler for the storage and transport of medical products, such as vaccines or blood products.
- Such cooling devices can be used in remote areas, for example in developing countries, in which a stable and secure continuous power supply can not be ensured, for example via a power grid.
- a stable and secure continuous power supply can not be ensured, for example via a power grid.
- an uninterrupted cold chain for food and / or medical products, such as vaccines or blood products is often necessary.
- the handling and storage of such products within the manufacturer's conditions to maintain the usability and effectiveness of the products is often difficult, which is considered a cause of the extremely poor living conditions of people living there and contributes significantly to high mortality among other things.
- the World Health Organization has therefore established a catalog of minimum criteria to be met by the refrigeration equipment used for the transport and storage of medical products.
- insulated boxes with ice bags or so-called freeze packs have become established for transport over short distances, with which the necessary cooling of the stored substances can be ensured at least during the short-term transport.
- the cooling temperature must not be more than plus 8 degrees Celsius and not less than plus 2 degrees Celsius, especially for various vaccines and blood products.
- sufficient cooling must be ensured even in the event of a power failure.
- electric cooling devices with or without cooling elements or battery-powered cooling elements into consideration. It turned out to be practicable to produce the necessary energy for the operation photovoltaic, since the solar irradiation in most developing countries over the entire year is sufficiently high.
- Such energy losses occur, for example, in a photovoltaic-operated cooling device regularly during the sunshine-free time (eg, at night or clouds).
- Such failures but can also occur in network operation, since a stable power supply is certainly not safe, especially in remote areas.
- the so-called "hold-over" time is also very low, generally less than 20 hours, which is the time span within which the internal temperature rises by a maximum of 10 degrees Celsius at 32 degrees Celsius ambient temperature.
- a temperature is often required that is well below 0 degrees Celsius to ensure adequate cooling of the water and thus rapid ice formation.
- cooling devices are known which, in addition to a cooling space for the products to be stored, have a freezer space for producing the ice bags or freeze packs.
- the ice packs or freeze packs can be used to bridge energy-free time.
- a cooling circuit For freezing the water and / or the ice bag, a cooling circuit can be used. Due to the limited availability of electrical energy, it is necessary for the freezing process to take place with a minimum of energy and time. In addition, since the cooling devices should be transportable, their handiness must be ensured. For example, outer dimension and weight should be minimized.
- a cooling device in particular a freezer
- the cooling device comprises a cooling circuit comprising a compressor, at least one evaporator and a condenser; a closable at its topdegutraum; and a coolant reservoir which at least partially encloses an upper region of the refrigerated goods space, wherein the at least one evaporator is arranged in the coolant reservoir, and wherein the at least one evaporator at least partially surrounds the upper region of the refrigerated goods space.
- an energy and time expenditure for a freezing process can be reduced, and at the same time the prescribed criteria and objectives can be met.
- the cooling device according to the invention has a compact, reliable and simple construction.
- ice can be made quickly and efficiently.
- the ice cream can also be referred to as "ice cream coat" or "icing”.
- the provision of the coolant reservoir no additional refrigerator for freezing or storage of ice bags or freeze packs necessary, whereby the cooling device can be made compact and simple.
- the at least one evaporator is disposed in a lower portion of the coolant reservoir.
- the at least one evaporator is arranged to freeze the coolant, in particular water, starting from a lower region of the coolant reservoir to an upper region of the coolant reservoir.
- the coolant reservoir may be an upwardly open coolant reservoir, so that the coolant can expand upwards without resistance during freezing.
- the top open coolant reservoir can be closed by a lid, for example, with the same lid, with which the top of thedegutraumes is closed.
- the coolant reservoir can also be formed from a partially closed, one-piece container in which the at least one evaporator is arranged.
- the at least one evaporator is configured as a tube evaporator.
- the at least one evaporator may comprise at least one loop, and in particular three or more loops.
- the at least one evaporator can be arranged in a simple manner and with little effort in the coolant reservoir, so that the at least one evaporator is guided around the region of thedegutraumes.
- the tube evaporator which may have one or more loops, the coolant in the coolant reservoir can be uniformly cooled and frozen. It is also conceivable that the designed as a tube evaporator evaporator is arranged in the coolant reservoir, that this has a slope.
- the coolant reservoir encloses the upper portion, and in particular an upper peripheral portion of thedegutraumes at least partially or even completely.
- the refrigerated goods space or the refrigerated goods can be cooled uniformly and from all sides, so that a temperature distribution within the refrigerated goods space is homogeneous. This is particularly advantageous for the storage of medical products, since, for example, the entire vaccine or all blood products are exposed to substantially the same temperature.
- the upper portion of the refrigerated goods space that the refrigerant reservoir at least partially or completely encloses corresponds to 10% to 90% of a height of the refrigerated goods space, and more preferably 40% to 60% of the height of the refrigerated goods spacedegutraumes.
- the coolant reservoir is open or closed at the top.
- the coolant reservoir has a U-shaped cross-section.
- the U-shaped cross-section may be open at the top, so that the coolant can expand without resistance during freezing upwards.
- the coolant reservoir includes outer walls that are at least partially undulated or rotated.
- the outer walls of the coolant reservoir in a direction which is perpendicular to the vertical extent of thedegutraumes be formed wavy or rotated.
- the cooling device includes a cold room having four cold room side walls, a cold room floor, and a lid configured to close the cold food space at its top.
- a receiving space or cavity may be formed between the four cooling space side walls of the cooling space and the outer walls of the cooling goods space, wherein the coolant reservoir may be arranged in this receiving space.
- the receiving space can be at least partially filled with air and / or with an insulating material, for example an insulating foam, be filled. By the insulating material, a thermal energy flow between the coolant reservoir and thedegutraum be set or influenced.
- the coolant reservoir is arranged at a distance from the four cooling-chamber side walls of the cooling space and / or the outer walls of the cooling-goods space.
- a predetermined thermal insulation between thedegutraum and the coolant reservoir can be provided.
- the distance is selected so that predetermined heat exchange between thedegutraum and the coolant reservoir can take place. This can be prevented, for example, that the interior and the walls of thedegutraumes fall to a temperature of below 2 degrees Celsius.
- the cooling device is configured to provide a temperature in the refrigerated goods compartment in a particular range of, in particular, plus 2 to plus 8 degrees Celsius, for example, when a primary cooling electric circuit of the refrigeration device due to a power interruption (FIG. eg at night, in clouds or in case of power failure) is not functional.
- a primary cooling electric circuit of the refrigeration device due to a power interruption FOG. eg at night, in clouds or in case of power failure
- a heating device can be provided, which is designed to supply heat to the refrigerated goods space. This can be prevented, for example, that the interior of thedegutraumes drops to a temperature of below 2 degrees Celsius.
- the cooling device is a freezer for storing and transporting medical products, such as vaccines or blood products.
- Such freezers can advantageously be used in remote areas, for example in developing countries, in which a stable and secure continuous energy supply, for example via a power grid can not be guaranteed.
- FIG. 1 is a schematic representation of a cooling device according to embodiments of the present disclosure
- FIG. 2 is a schematic sectional view of the cooling device of FIG. 1 according to embodiments of the present disclosure
- FIG. 1 is a schematic representation of a cooling device according to embodiments of the present disclosure
- FIG. 2 is a schematic sectional view of the cooling device of FIG. 1 according to embodiments of the present disclosure
- FIG. 3 shows a schematic illustration of a cooling circuit of a cooling device according to embodiments of the disclosure
- FIG. 4 is a schematic sectional view of a cooling device with a tube evaporator with loops according to embodiments of the present disclosure
- FIG. 6 shows a transparent view of the coolant reservoir shown in FIG.
- FIG. 1 shows a schematic representation of a cooling device 100.
- the cooling device 100 comprises a cooling circuit 200 which has a compressor 210, at least one evaporator 220 and a condenser (not shown), a refrigerated goods space 300 closable on its upper side, and a coolant reservoir 400 which at least partially encloses an upper region of the refrigerated goods space 300.
- the evaporator 220 is arranged in the coolant reservoir 400 and encloses the upper region of thedegutraumes 300 at least partially.
- the coolant reservoir 400 is a tank or tub suitable for receiving a coolant or coolant (not shown), such as water.
- the refrigerated goods space 300 is provided and designed for receiving or storing refrigerated goods, for example of medical products.
- a failure of the power supply as occurs for example in a photovoltaic-powered cooling device regularly during the sunshine-free time, for example, at night or cloudy sky, but also the need to be able to transport medical products in the cooling device over land, makes it necessary, for example To produce ice, with which the refrigerated goods can be cooled in theharigutraum 300 during the energy-free time or transport.
- the arrangement of the at least one evaporator 220 of the cooling circuit directly in the coolant reservoir 400, that is to say in the coolant, for example water, allows a good energy balance to be achieved. Loss between the coolant and the at least one evaporator 220 can be ensured, whereby a rapid freezing of the coolant is made possible with reduced energy expenditure, see also Fig. 5 and Fig. 6.
- ice can be produced quickly and efficiently.
- the ice cream can also be referred to as "ice cream coat" or "icing”.
- the provision of the coolant reservoir 400 no additional cooling space for freezing or storing ice bags or freeze packs necessary, whereby the cooling device 100 is compact, easy and inexpensive to produce. Also, the ice bag or freeze packs themselves are not necessary, which further simplifies a construction of the cooling device 100 and reduces manufacturing costs, in particular because fewer moving parts are present.
- the coolant reservoir 400 and / or the at least one evaporator 220 does not extend beyond the upper side or an upper edge of the cooling space 300.
- the cooling device 100 can be made compact.
- a height of the cooling device 100 can be minimized since the at least one evaporator 220 surrounds the upper region of the refrigerated goods space 300 and is thus not arranged above or below the refrigerated goods space 300.
- the compressor 210 and / or the condenser may be arranged on one side of the refrigerated goods space 300. As a result, a compact structure can be made possible. In particular, by the lateral arrangement of the compressor 210 and / or the capacitor, the height of the cooling device 100 can be further reduced and the influence of unavoidable heat generation of the cooling device on the cooling space is minimized.
- the cooling circuit is preferably designed as a refrigerator that uses a thermodynamic cycle.
- heat can be taken up, for example, by the compressor, at a location, for example, the coolant to be frozen, below the ambient temperature and delivered elsewhere at a higher temperature, for example, on the capacitor.
- the refrigerated goods space 300 has the top side and a bottom side.
- the terms “top” and “bottom” refer to opposite sides of the refrigerated goods space 300 and the cooling device 100.
- the top and the bottom are connected by side walls.
- the underside may also be referred to as a "bottom.”
- the upper side has an opening through which the refrigerated goods space 300 is accessible from the outside The opening is closable and can be closed in particular by a cover (not shown).
- FIG. 2 shows a schematic sectional view of the cooling device 100 of FIG. 1.
- the evaporator 220 is configured to freeze the coolant starting from a lower portion of the coolant reservoir 400 toward an upper portion of the coolant reservoir 400.
- the coolant freezes from the bottom of thedegutraumes 300 and the cooling device 100 toward the top of thedegutraumes 300 or the cooling device 100, indicated by the arrow A. This allows the refrigerant during the freezing process without resistance, causing damage the coolant reservoir 400 or the cooling device 100 is prevented.
- the evaporator 220 may be disposed in a lower portion of the coolant reservoir 400 to freeze the coolant beginning at the lower portion of the coolant reservoir 400 toward the upper portion of the coolant reservoir 400.
- the evaporator 220 is disposed in the lower two-thirds or a lower half of the coolant reservoir 400.
- the at least one evaporator 220 is arranged in the coolant reservoir 400 such that the at least one evaporator 220 is at least partially, and in particular completely, surrounded by the coolant or immersed in the coolant.
- the coolant reservoir 400 may have a volume that can accommodate a predetermined amount of the coolant. In this case, less than 90%, and in particular between 50% and 90% of the volume of the coolant reservoir 400 can be filled with the coolant. In other words, the coolant reservoir 400 can be filled with the coolant up to a certain height, which is smaller than the total height of the coolant reservoir 400. As a result, the coolant can expand upwards during freezing without it emerging from the coolant reservoir 400.
- the coolant reservoir 400 is open at the top. However, it is also conceivable that the coolant reservoir 400 is closed at the top. When the coolant reservoir 400 is closed at the top, in some implementations, less than 90%, and more particularly, between 50% and 90% of the volume of the coolant reservoir 400 may be filled with the coolant, thereby preventing damage to the coolant reservoir 400 and the cooling device 100, respectively can be.
- the coolant reservoir 400 has a U-shaped cross section, as shown by way of example in FIG. 2.
- the U-shaped cross-section is open at the top, so that the refrigerant can expand upwards without resistance during freezing, whereby damage to the coolant reservoir 400 or the cooling device 100 is prevented.
- the upper open coolant reservoir 400 is closed by a lid (not shown), and in particular by the same lid, which also closes the top of thedegutraumes 300.
- the coolant can be water. However, the present disclosure is not limited to the use of water, and any other coolant or coolant suitable for the purpose may be used.
- the coolant reservoir 400 comprises outer walls 412, which are designed to be wavy or rotated in a direction substantially perpendicular to the vertical extent of the refrigerated goods space 300, as shown in the example of FIG. 2. Thereby, the cooling device 100, and in particular, the coolant reservoir 400 can be provided with increased stability.
- the cooling device 100 comprises a cooling space 110 having four cooling space sidewalls 112, a cooling chamber floor 114 and a closable cover (not shown) which is arranged to close the cooling space 300 at its upper side.
- the refrigerated goods space 300 and the coolant reservoir 400 are arranged in the cooling space 110 or inserted into the cooling space 110.
- the top ofdegutraumes 300 and the open top coolant reservoir 400 are closed by the same lid.
- the cooling device 100 may have a simple construction.
- a receiving space 120 or cavity is formed between the four cooling space side walls 112 of the cooling space 110 and the outer walls 312 of the refrigerated goods space 300.
- the coolant reservoir 400 is arranged in this receiving space 120.
- the receiving space 120 is at least partially filled with air, as shown in Fig. 2, and / or an insulating material (not shown), for example, a Isolierschaum.
- the insulating material thermally isolates the refrigerated goods space 300 from the environment of the refrigerating device 100 or the outside world.
- the coolant reservoir 400 is spaced from the four cooling chamber sidewalls 112 of the cooling space 110 and / or the outer walls 312 of the refrigerated goods space 300.
- a predetermined thermal insulation between the refrigerated goods space 300 and the coolant reservoir 400 is achieved.
- the distance is selected so that a predetermined heat exchange between thedegutraum 300 and the coolant reservoir 400 takes place. This prevents the interior of the refrigerated goods space 300 from dropping to a temperature of below 2 degrees Celsius.
- the area between the refrigerated goods space 300 and the coolant reservoir 400 may be at least partially filled with the insulating material, for example the insulating foam.
- the cooling space 110, the coolant reservoir 400 and / or the refrigerated goods space 300 preferably consists or consist of a plastic, for example of polyethylene or polypropylene. Of course, the corresponding parts may also consist of another suitable material, in particular of metal.
- the cooling space 110, the coolant reservoir 400 and the refrigerated goods space 300 are integrally formed in the present exemplary embodiment. However, the cooling space 110, the coolant reservoir 400 and the refrigerated goods space 300 may also be designed in several parts.
- the cooling device 100 enables the refrigerated goods space 300 to provide a temperature in a certain range of, for example, plus 2 to plus 8 degrees Celsius, for example if the primary electric cooling circuit of the cooling device 100 is inoperative due to a power failure, for example, at night or in cloudy skies or in the event of a power failure is.
- a suitable design of the coolant circuit the volume of the coolant reservoir 400, the height of the coolant reservoir 400, the type and amount of the insulating material in the receiving space 120, the distance between thechengutraum 300 and the coolant reservoir 400 and / or a combination of these measures.
- a heater (not shown) configured to supply heat to the refrigerated goods compartment 300. This can be prevented, for example, that the interior of thedegutraumes 300 drops to a temperature of below 2 degrees Celsius.
- such a heating device can be battery-operated so that the heating device is functional even in the absence of an external energy source.
- FIG. 3 shows a schematic representation of the cooling circuit of the cooling device 100.
- FIG. 4 shows a schematic sectional view of the cooling device 100 with the evaporator 220 with loops according to embodiments of the present disclosure.
- the evaporator 220 is designed as a tube evaporator and extends at least partially in a circumferential direction of the refrigerated goods space 300, so that the evaporator at least partially surrounds the upper region of the refrigerated goods space 300, and in particular an upper peripheral region of the refrigerated goods space 300.
- the evaporator 220 comprises at least one loop, and according to the described embodiment, three loops.
- the at least one evaporator 220 can be arranged in a simple manner and with little effort in the coolant reservoir 400, so that the evaporator 220 is guided around the upper region of the refrigerated goods space 300.
- the coolant in the coolant reservoir 400 can be uniformly cooled and frozen. As shown in the example of FIGS.
- the evaporator 220 comprises a tube 222 which extends from the compressor 210 at least partially around a peripheral region of thedegutraumes 300 and then after a first (vertical) bend 224 by about 180 ° back in the direction of the compressor 210 is running. This course forms a first loop.
- the evaporator 220 has a second (vertical) bend 226 of about 180 ° to form a second loop, etc.
- the evaporator 230 has three loops, as shown in Figs. 3 and 4. However, evaporator is also conceivable, which has fewer or more loops.
- FIGS. 5 and 6 an alternative embodiment of an evaporator 220 is shown in FIGS. 5 and 6.
- the evaporator 220 has a tube 222, which extends from the (not shown) Compressor 210 coming around a peripheral region of thedegutraumes 300.
- the pipe runs with a slight slope of about 5 ° to 15 °.
- the coolant reservoir 400 encloses the upper region of thedegutraumes 300, and in particular the upper peripheral region of thedegutraumes 300 completely.
- the refrigerated goods space 300 is cooled uniformly and from all sides, so that the temperature distribution within the refrigerated goods space 300 is homogeneous. This is particularly advantageous for the storage of medical products, since the stored articles, for example the vaccine or blood products, are exposed to substantially the same temperature.
- the at least partially or completely enclosed by the coolant reservoir 400 upper portion of thedegutraumes 300 corresponds to 10% to 90% of the height of thedegutraumes 300, and in particular 40% to 60% of the height of thedegutraumes 300. This is on the one hand, a sufficient cooling of thedegutraumes 300th ensured, and on the other hand, the weight of the cooling device 100 is reduced because thedegutraum 300 is not completely, so over its entire height, surrounded by the coolant reservoir 400 or embedded in this or immersed.
- the cooling device 100 is designed as a freezer for storing and transporting medical products, for example vaccines or blood products.
- Such freezers can advantageously be used in remote areas, for example in developing countries, in which a stable and secure continuous energy supply, for example via a power grid can not be guaranteed.
- the present invention specifies a cooling device in which at least one evaporator is arranged directly in a coolant reservoir or in the coolant. Due to the arrangement of the vaporizer of the cooling circuit in the coolant reservoir, so in the coolant, such as water, a good flow of energy between the coolant and the evaporator can be ensured, whereby a rapid freezing of the coolant, for example in less than 1 hour, is made possible with reduced energy consumption.
- the provision of the coolant reservoir no additional refrigerator for freezing or storage of ice bags or freeze packs necessary, whereby the cooling device can be made compact and simple. Furthermore, manufacturing costs can be reduced because no such separate ice pack or freeze packs are necessary and the cooling device can be produced in a simple and cost-effective manner.
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2015/058207 WO2016165763A1 (en) | 2015-04-15 | 2015-04-15 | Cooling device |
Publications (2)
Publication Number | Publication Date |
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EP3134692A1 true EP3134692A1 (en) | 2017-03-01 |
EP3134692B1 EP3134692B1 (en) | 2020-07-08 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15719425.9A Active EP3134692B1 (en) | 2015-04-15 | 2015-04-15 | Cooling device |
Country Status (8)
Country | Link |
---|---|
US (1) | US10309712B2 (en) |
EP (1) | EP3134692B1 (en) |
KR (1) | KR20170138917A (en) |
CN (1) | CN107567571B (en) |
AU (1) | AU2015391356A1 (en) |
DK (1) | DK3134692T3 (en) |
TW (1) | TW201641904A (en) |
WO (1) | WO2016165763A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2575859B (en) * | 2018-07-26 | 2022-03-30 | B Medical Systems Sarl | Ice-lined vaccine refrigerator |
JP7225666B2 (en) * | 2018-10-18 | 2023-02-21 | 日本電産株式会社 | cooling unit |
GB2578758B (en) * | 2018-11-07 | 2021-03-24 | B Medical Systems Sarl | Cold storage device |
USD1002676S1 (en) | 2019-08-30 | 2023-10-24 | Dometic Sweden Ab | Appliance |
WO2021086203A1 (en) * | 2019-10-30 | 2021-05-06 | Universidad Peruana Cayetano Heredia | Insulated chamber refrigerated with photovoltaic energy |
EP4023965A1 (en) * | 2021-01-05 | 2022-07-06 | Thermo King Corporation | Nested cooling arrangements for refrigerated transport |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB359119A (en) * | 1929-08-28 | 1931-10-22 | British Thomson Houston Co Ltd | Improvements in, or relating to, evaporators for refrigerating apparatus |
US2674101A (en) * | 1950-09-08 | 1954-04-06 | Int Harvester Co | Refrigeration control means |
US3018638A (en) | 1959-11-13 | 1962-01-30 | Eric H Winkler | Portable refrigeration apparatus |
US5950450A (en) * | 1996-06-12 | 1999-09-14 | Vacupanel, Inc. | Containment system for transporting and storing temperature-sensitive materials |
US6578370B1 (en) * | 2001-10-03 | 2003-06-17 | Alfonso G. Andress | Continuous flow quick-chilling apparatus and method for mass production of precooked foods |
CN2709888Y (en) * | 2004-04-09 | 2005-07-13 | 河南新飞电器有限公司 | Cold-storage evaporator |
DE202010017733U1 (en) * | 2010-06-09 | 2012-08-14 | Wolfgang Wasserthal | cooler |
WO2013091913A1 (en) | 2011-12-20 | 2013-06-27 | Dometic S.A.R.L. | Cooling element and cooling device |
US9759451B2 (en) * | 2013-11-22 | 2017-09-12 | Thermo Fisher Scientific (Asheville) Llc | Recirculating bath |
-
2015
- 2015-04-15 US US15/317,273 patent/US10309712B2/en active Active
- 2015-04-15 CN CN201580030767.1A patent/CN107567571B/en active Active
- 2015-04-15 WO PCT/EP2015/058207 patent/WO2016165763A1/en active Application Filing
- 2015-04-15 DK DK15719425.9T patent/DK3134692T3/en active
- 2015-04-15 EP EP15719425.9A patent/EP3134692B1/en active Active
- 2015-04-15 AU AU2015391356A patent/AU2015391356A1/en not_active Abandoned
- 2015-04-15 KR KR1020167034173A patent/KR20170138917A/en not_active Application Discontinuation
-
2016
- 2016-04-15 TW TW105111877A patent/TW201641904A/en unknown
Also Published As
Publication number | Publication date |
---|---|
KR20170138917A (en) | 2017-12-18 |
DK3134692T3 (en) | 2020-09-21 |
EP3134692B1 (en) | 2020-07-08 |
AU2015391356A1 (en) | 2016-12-15 |
CN107567571B (en) | 2020-08-18 |
TW201641904A (en) | 2016-12-01 |
WO2016165763A1 (en) | 2016-10-20 |
US20180023876A1 (en) | 2018-01-25 |
US10309712B2 (en) | 2019-06-04 |
CN107567571A (en) | 2018-01-09 |
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